Year: 2025
Type: article
Abstract: . The trichlorofluoromethane (CFC-11) emission from its production and use (PAU) has drawn wide attention, while its combustion sources have been overlooked. This study identified CFC-11 emission factors (EFs) as 3.6, 3.2, and 0.025 mg kg⁻1 from the combustion of domestic chunk coal, honeycomb briquette, and coal-fired power plant, respectively. A multi-year (2000~2021) emission inventory of CFC-11 from coal combustion was established in China. Results indicated that its annual emission averaged 233.5 t yr⁻1. It exhibited fluctuations and held an overall upward trend, increasing from accounting for 0.8 % of PAU emissions in 2000 to 9.8 % in 2021, with the peak value appearing in 2016. In Shandong and Hebei provinces with high coal consumption amounts, the CFC-11 emissions from coal combustion increased by approximately 74 % during 2014~2017 compared to 2011~2012. At the Gosan station close to Chinese mainland, CFC-11 emitted from coal combustion in Hebei and Shandong was approximately occupied by ~30 % of its average concentration during January 2016. An additional climate effect of the clean heating and coal-to-electricity policies in China was also observed, with an obvious decrease (2.2×106 t and 3.4×107 t) of CO2-equivalent emission. This study provides substantial evidence of CFC-11 emission from coal combustion and highlights the role of combustion emission under the background of reducing CFC-11 from PAU. The data compiled in this work can found at https://doi.org/10.6084/m9.figshare.28523063 (Niu et al., 2025).
Source: Earth system science data
Authors: Zhenzhen Niu, Shaofei Kong, Qin Yan, Yi Cheng, Huang Zheng, Yao Hu, Jian Wu, Xujing Qin, Haoyu Dong, Weisi Jiang, Yingying Yan, Wei Liu, Feng Ding, Yongqing Bai, Shihua Qi
Language: English
Subfield: Atmospheric Science
Field: Earth and Planetary Sciences
Domain: Physical Sciences
SDG: Climate action
Open Access status: gold
Estimated APC paid: $1,509
Awards: G2380489775, G7307214329, G957774278
OpenAlex ID: W4416937826